St. Louis County, Missouri
Dellwood is a city in St. Louis County, Missouri. Dellwood adopts its own zoning, so inside its limits Dellwood’s rules apply, not the county’s. 7 rules below are quoted from official sources and independently re-checked, most recently on October 23, 2026. Rules for unincorporated land are on the St. Louis County page.
Land inside Dellwood city limits (not St. Louis County unincorporated area): Dellwood city adopts and administers its own zoning chapter, Title IV Chapter 400 Zoning Regulations.
“the city is hereby divided into districts which shall be known as: district type a residential b-1 residential b-2 residential c commercial c-2 planned commercial”
Single-family dwellings in Dellwood city District A (single-family district) inside city limits.
minimum lot size: >= 9000 square feet
“single-family dwellings with a minimum lot size of nine thousand (9,000) square feet.”
“the boundaries of these districts are hereby established as shown on a map entitled the "district map" on file in the office of the commission.”
“in district b-1, single-family dwellings with a minimum lot size of seven thousand five hundred (7,500) square feet shall be permitted as well as any use permitted in district a subject to any conditions required therein.”
New or structurally altered single-family dwelling in Dellwood city District A (a single-family district) inside city limits.
minimum lot area: >= 9000 square feet (per family) · minimum lot width: >= 75 feet
“in the a single-family district, every dwelling erected or structurally altered shall provide a lot area of not less than nine thousand (9,000) square feet per family and every lot shall have a minimum width of seventy-five (75) feet.”
Buildings in Dellwood city single-family districts (District A and B-1 per the lead-in) inside city limits.
front yard minimum: >= 30 feet (porch/terrace 20 feet; observance rule may apply) · interior side yard minimum: >= 5 feet (10% of lot width, capped at 6 feet) · rear yard minimum: >= 20 percent of lot depth (capped at 25 feet)
“in an a and b-1 single-family districts, the height of buildings, the minimum dimensions of yards and the minimum area per family shall be as follows:”
Buildings in Dellwood city single-family districts inside city limits.
maximum height: <= 25 feet (also limited to 1 1/2 stories)
“no building hereafter erected or structurally altered shall exceed one and one-half (1 1/2) stories or twenty-five (25) feet.”
We looked and could not find an official answer yet. Silence is not permission; ask Dellwood or St. Louis County directly.
Each answer was extracted from an official source and independently re-checked against that source by a second reviewer. That is an evidence check, not legal advice. Rules change; confirm with the authority before you buy or build.
Unanswered questions are usually a sign that Dellwood publishes no rule on the point, not that none exists. St. Louis County’s page lists the county offices to call.
Off-grid gear
Going off-grid in Dellwood means bringing your own water and power. The kit we’d start with:
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